All One Universe Hardcover – January 1, 1996 by Poul Anderson
 
Illuminating essays that provide commentary on his own stories and on the works of other literary figures, including Rudyard Kipling and John W. Campbell, Jr., accompany a richly varied assortment of stories by a master of the science fiction genre.
 
From Booklist
During a luminous career spanning nearly half a century, Anderson has cultivated a remarkably poetic style for a writer whose specialty is hard science fiction. In his latest collection of fiction and essays, he also reminds us how far his imagination reaches, as the themes of a colorful assortment of stories range from life on other planets to alternative history. In "The Voortrekkers," he poignantly recounts the fate of two galactic explorers whose identities are, with each planetary landing, recycled in new bodies. "In Memoriam" hauntingly describes the last moments of human history and the eventual engulfment of the earth by the sun. In outstanding nonfiction pieces, Anderson insightfully eulogizes legendary sf editor John W. Campbell; reappraises the legacy of Rudyard Kipling, who dabbled in fantasy; and provides extracts from his personal diary during the Voyager flyby of Neptune. Must reading for Anderson's legion of fans, this book is also a perfect introduction to his perennial genius. Carl Hays
 
4.5